PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Products of reaction during air injection is a low BTU gas composed principally of hydrogen, carbon monoxide, carbon dioxide and nitrogen.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com